Dynacord DEM 317, DEM 316 User Manual

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DEM 316 Batterie-MODULE24 V / 38 Ah

DEM 317 Batterie-MODULE24 V / 65 Ah

Features of the battery modules

19 “ drawer-typechassis with 3 HU, 4 HU and 2x4 HU

Rated voltage 24 V

Energy storage

completely maintenance-free,universal-locationlead batteries with grid plates and fixed electrolyte, suitable for cycle operation, continuous battery power supply and trickle charge.

Exhaustive discharge protection relay controlled by DEM 313 charger

Charging input and battery outputs via AMP flat pin terminals 6.3 x 0.8 mm charging input and all battery outputs fused.

Temperature tracking of charging voltage at standby charge depending on the battery temperature with integrated temperature sensor.

Batteries with VdS-registrationand UL recognition.

The technical specifications comply with the requirements issued by the “Leistungsgemeinschaft Beschallungstechnik”, pertaining to the professional association for audio and video technology in the ZVEI.

Table of Contents

1.Emergency power supply of alarm apparatus

2.Commissioning the battery module

2.1Battery module DEM 316/DEM 317

2.2Battery module DEM 317 A and DEM 317 B

2.3Fusing the inputs and outputs

2.4BATTERY CONTROL connection

2.5Connection for battery charging

3.Notes for the user

3.1Use of the battery is to be avoided in the following locations

3.2Regulations for battery use

3.3Storage and additional charging


3.5Battery life

3.6Battery recycling

4.Registrations and Standards

5.Testing and inspecting alarm devices

6.Explanation of terms

7.Specifications Battery Modules DEM 316 / DEM 317

8.Block Diagram

1. Emergency power supply of alarm devices

Alarm devices require 2 independent energy sources, both of which must be able to power the alarm device alone. One of the energy sources must be the general mains supply or a similar network in non-stopoperation. The other must be part of the apparatus (e.g. a battery) or an equivalent network fused separately. If the mains power supply is interrupted, the second source of energy must guarantee constantnon-stopoperation automatically and without interruption. If the energy source belonging to the alarm device consists of a battery, the user must ensure that the batteries used are suitable for stationary and floating operation. The power supply for alarm devices must not be used to supply other apparatus or parts. However, electrical equipment which serves to pass on messages may also be powered by the said source. An automatic charging device is required to charge and maintain the battery. It must be able to charge a battery which is discharged to its discharge voltage up to 80% max. of its rated capacity within 24 hours. The battery capacity must be sufficient to guarantee the fixed alarm duration at the end of the stored energy time. When selecting new batteries, the user should make sure that their capacity is sufficient to compensate the capacity loss due to natural ageing of the batteries during the prescribed service life.

2. Commissioning the battery module

2.1 Battery module DEM 316/DEM 317

The following points must be observed:

The battery may only be connected to the charging apparatus without load (i.e. all types of consumers must be disconnected) and when the mains is switched OFF.

The battery must be charged directly after discharging. The battery must not be left uncharged. It becomes impossible to maintain a charge if the battery is left uncharged for any length of time.

Please ensure that the temperature inside the rack is always within the admissible temperature range specified in the data sheet.

2.2 Battery module DEM 317 A and DEM 317 B

The following points must be observed:

The insulated screw terminals on the rear side of the battery module DEM 317 are directly connected to the battery poles and are live.

Before removing the insulating caps, all the connections of the battery modules DEM 317A and DEM 317B are to be disconnected.

When connecting the cables, the insulating caps on the battery poles should never be removed at the same time because this could cause a short. After the cables have been connected they should be replaced immediately.

The cables between the battery modules DEM 317A and DEM 317B connect the pole B+ with B+, M with M and B- with B-.When connecting the cables, the lock washer is to be mounted between the cable lug and the nut to secure the screw.

2.3 Fusing the inputs and outputs

The batteries have individually fused outputs for the load connections. Thus all plus and minus lines are protected against excess currect and short. Different line cross-sectionsfor consumers with low and high current can be connected to a battery at the same time, providing that the fuse values of their individual outputs are chosen accordingly.The maximum value of the fuses must not, however, exceed 20 A.

The total amount of the currents of all the output fuses in a fuse block must not exceed 50 A.

If the fuse values are changed, the current values printed on the units above the fuse switch are to be covered with the enclosed sticky labels. The fuse values for the appropriate plus and minus outputs must always be the same.

If any outputs are not used, the fuses are to be removed and and fuse values above the fuse switches are to be covered over with the enclosed blank sticky labels.

The output secured with 3 A is intended for connection of the control module DEM 207.

The cross-sectionsof the lines connected must be correctly dimensioned for the fuse value selected.Please note that lines laid in cable channels have a lower permissible current loading due to lower heat dissipation.

The following are guidelines for bundled lines

Number of lines

Reduction factor

2 to 5


6 to 15


16 to 30


Module type

DEM 287 power amp. 125 W DEM 288 power amp. 250 W DEM 289 power amp. 400 W with NRS 90 144

Current consumption at Ebat = 24 V

Standby rated power rated power Fuse value -10dB wert

10 mA

2.5 A

5.7 A

7.5 A

10 mA

3.5 A

10.6 A

10 A

10 mA

7 A

19.7 A

20 A

Table I Fuse values of the battery outputs for connection of power amplifiers

Table II shows the maximum currents which can be drawn from the batteries. These must not be exceeded. This gives the maximum number of power amplifiers which can be powered by the batteries.


I max

max. number of power amplifiers*



in A

DEM 287

DEM 288

DEM 289

DEM 316





DEM 317





Table II Maximum currents and number of power amplifiers

* The number of power amplifiers which can be directly connected to the battery drawers can be lower than the values specified in Table II (see number of outputs, section 8, specifications). The values specified in the Table only refer to the connection of one amplifier type to one battery type. As long as the maximum current drawn is observed, however, various types of amplifier can be supplied by one type of battery.

Circuit diagram of the battery connection to the charging device.

2.4. BATTERY CONTROL connection

The battery drawers are equipped with a exhaustive discharge protection which is controlled by the monitoring module in the charging device DEM 313. The monitoring circuit checks whether the battery’s discharge voltage has been reached when the batteries are discharged. If the battery voltage is less than 19.5 V, measured at the battery poles, the consumers are disconnected from the battery and the battery is thus reliably protected from exhaustive discharge.

Note! If the15-poleplug connector BATTERY CONTROL has not been correctly connected with the charging device, or if the battery voltage is lower than the discharge voltage, the battery outputs are not live

The connection of the temperature sensor for the temperature tracking of the battery voltage takes place via contact 5 (+temp) and contact 6 (-temp)of the15-poleplug connector BATTERY CONTROL to the charging device DEM 313. If the connection is faulty, the temperature tracking does not work and the battery will not charged. (Also see the operating instructions for the charging device).

In the case of the battery module DEM 317, the temperature sensor is located in the module DEM 317A.

2.5 Connection for battery charging

Connection of the charging device to the battery takes place via the flat pin connector CHARGE CURRENT. The plus pole of the charging device is to be connected to the plus pole of the battery, and the minus pole of the charging device is to be connected to the minus pole of the battery. (Please also see the operating instructions of the charging devices).

3. Notes for the user

3.1Use of the battery is to be avoided in the following locations.

areas exposed to direct sunlight

areas with excessive radioactivity, infrared radiation or ultra-violetradiation

areas with organic solvent vapours, dust, salt or corrosive gases

areas with abnormal vibration.

3.2Regulations for battery use

Do not throw batteries into the fire. Do not place batteries in the proximity of fires.

Do not short battery poles.

Do not tamper with or open batteries.

If the battery has been damaged and diluted sulphuric acid comes into contact with skin or clothing, rinse immediately with plenty of water. If diluted sulphuric acid gets into the eyes, consult a doctor immediately.

Always re-chargea battery after discharging.

Never use batteries with different capacities, different degree of discharge or a mixture of old and new batteries together. The manufacturing dates should be within one month of each other.

Batteries should be stored at as low a temperature as possible. If batteries are stored at normal temperatures, additional charging is necessary once every six months.

3.3Storage and additional charging

During storage the capacity is reduced due to self-discharge.The battery should be stored in a cool, dry place.

If the average monthly temperature is between 20°C and 30°C, one additional charging procedure is necessary every 8 months. If the average monthly temperature is less than 20°C, one additional charging procedure is necessary every 12 months.

If a stored battery is used, one charging procedure should always be carried out before use.

3.4 Transport

If the battery is transported, it should never be exposed to excessive jolting or knocks.

If a battery is connected to a device during transport, it must be secured well and the current circuit must be interuppted.

3.5 Battery service life

Generally speaking, the battery service life in standy parallel operation amounts to 3 - 5 years and approximately 260 cycles at 100% discharge depth or more in cyclic operation. The actual service life is reduced if the appropriate operating conditions are not maintained, (i.e. charging, discharging, working temperature and storage).

We recommend charging the battery at an ambient temperature of between 5°C and 35°C to minimize detrimental effects on its service life.

3.6 Battery recycling

The batteries are marked with a recycling symbol as illustrated below. At the end of their service life, the batteries should be returned to the manufacturer or supplier or taken to a special collection centre so that they can be recycled.

4.Registrations and Standards

VdS registration

The batteries have been tested and recognized by the VdS (Verband der Sachversicherer) and comply with the following standards:

DIN 57 510 / VDE 0510 Akkumulatoren und Batterien, ortsfeste Batterien

DIN 43 534 “Wartungsfreie” verschlossene Akkumulatoren mit festgelegtem Elektrolyt

DIN 43 539 part 5 Prfungen “wartungsfreie” verschlossene Akkumulatoren mit festgelegtem Elektrolyt

UL approval

The batteries have received recognition from the Underwriters Laboratories Inc. and have been registered under the number MH 15705.

IATA classification

The batteries have been cleared by the International Air Transport Association (IATA) for transport in aircrafts and have received the classification “leak-proof”.

5.Testing and inspecting alarm devices

In order to gurantee that the alarm device is in working condition, qualified personnel must carry out inspections and servicing regularly.

Inspections must be carried out at least once every 3 months at approximately equal intervals to comply with DIN VDE 0833 part 1.

Servicing must be carried out at least once per year, in accordance with the manufacturer’s instructions. The annual services may be linked with the quarterly inspections if so desired, meaning that all sections of the apparatus are inspected within one year.

For the battery of an alarm device this means:

quarterly tests and annual malfunction simulations of the operating duration with the consumers.

We recommend carrying out the battery capacity test in accordance with DIN 43 539 part 1, whereby the battery manufacturer’s instructions are to be observed.

Please see section 3.2 for instructions on how to treat maintenance-freelead accus.

7.Explanation of terms:

Continuous battery power supply

In this mode, the battery is constantly kept in full charge. It only gives off current if the DC source, supplied by the mains, fails.

Nominal capacity:

The nominal capacity is the value in ampere-hoursfor a20-houreven, uninterrupted discharge with I20 up to the discharge voltage of 1.75 V/cell at a temperature of 22°C.


The capacity of a battery is the amount of electricity which can be extracted under the conditions in question. It depends on the discharge current, the discharge voltage and the temperature.

Service life

For batteries in alarm apparatus and emergency announcing systems, the end of a battery’s servive life is reached when the capacity is less than 80% of the rated capacity.

Stored energy time

This is the time span between recognizing a failure in the mains supply and remedying this failure.

Alarm duration

The alarm duration is the time during which the alarm signal is given off.

Emergency announcement duration

This is the time during which announcements are made to clear the building or section of a building.

8. Specifications battery modules




DEM 316

DEM 317

Nominal voltage

24 V

24 V

Discharge voltage at 25°C (1)

19,5 V

19,5 V

Nominal capacity for 20 hr

38 Ah

65 Ah

Nominal discharge current I20

1.9 A

3.25 A

Capacity for 5 hr (2)

33 Ah

55 Ah

Capacity for 1 hr (3)

23 Ah

39 Ah

Capacity for 1 C (4)

20 Ah

33 Ah

Discharge current for 5 hr (2)

6.6 A

11 A

Discharge current for 1 hr (3)

23 A

39 A

Discharge current for 1 hr (4)

38 A

65 A

Max. discharge current

100 A

150 A

Standby current at mains failurel

200 mA

300 mA

Number of outputs



Innenwiderstand für 7.5 A Ausgang

ca.50 mOhm

ca. 50 mOhm

End-of-chargevoltage in standby operation at 20 °C

27.3 V

27.3 V

(Continuous battery power supply)



Temperature adaption



Nominal charging current

4 A

4 A

Dimensions (W x D)

483 mm x 370 mm



178 mm

2x178 mm

Weight approx.

36.1 kg

30.0 kg (A)



30.5 kg (B)

(1)Discharge voltage at 25°C: 1.75 V/cell x 12 cells = 21.0 V

(2)Capacity at 5 hours discharge with discharge current for 5 hr

(3)Capacity at 1 hour discharge with discharge current for 1 hr

(4)Capacity at discharge with the current in A corresponding with the nominal capacity in Ah

Block diagram

DEM 316

DEM 317A

DEM 317B


Das Werk leistet Garantie für alle nachweisbaren Materialund Fertigungsfehler für die Dauer von 36 Monaten ab Verkauf. Garantieleistungen werden nur dann anerkannt, wenn gültige, d.h. vollständig ausgefüllte Garantieunterlagen vorliegen. Von der Garantie ausgenommen sind alle Schäden, die durch falsche oder unsachgemäße Bedienung verursacht werden. Bei Fremdeingriffen oder eigenmächtigen Änderungen erlischt jeder Garantieanspruch.


The factory grants warranty covering all verifiable material and manufacturing faults for a period of 36 months after purchase. Warranty claims will only be upheld if valid, i.e. fully completed warranty forms, are submitted. This warranty shall not cover damage caused by incorrect or improper operation. Any claim to warranty shall become null and void in the event of modifications to the equipment being made by third parties or the purchaser himself.

GmbH Hirschberger Ring 4594315 StraubingTelefon (09421)706-0Telefax (09421)706-265Änderungen vorbehalten. Subject to change without prior notice. Printed in Germany 29. 03. 1999 / 347 030

Internet: http:// www.dynacord.de